HP LH4r HP Netserver LH 4r Rack Cabling Guide - Page 33

Chapter 2 Connecting and Routing Cables to the HP NetServer LH 4r ◊ For 120 VAC, a 16-amp Power Distribution Unit (PDU) is available ◊ For both 200/208 and 230/240 voltages, two Power Distribution Unit (PDU) models (rated 10 A and 16 A) are available ◊ Multiple PDUs can be used in each rack enclosure, depending upon requirements for power, current, and number of receptacles ◊ The appropriate power cord for each server is shipped according to local requirements; refer to Table 3-1 for details 100/120V PDU Rack Power Configurations The 120 VAC PDU power configurations are detailed in the recommendations shown below and in Table 2-4 and Figure 2-8. NOTE 100 VAC configurations are the same as 120 VAC, except for the UPS and the cable which connects the PDU to it. See Table 3-1 and the notes which accompany it. Connecting the PDU 120 VAC Configuration The Power Distribution Unit (PDU) plugs into the Uninterruptible Power Supply (UPS) if one is present. The 120 volt PDU uses an E7802A detachable cord with a NEMA 5-20P connector for connections to the receptacles on the right-hand side (viewed from the rear) of the UPS. It connects to the PDU through a C19 connector. CAUTION It is not possible to plug one 16-amp, 120 VAC PDU into another. This type of PDU must be plugged directly into a UPS or site AC power circuit. Attempting to plug one of these units into another could result in electrical failure or damage to the equipment. Alternate 120 VAC Power Configurations When the 120 VAC PDU is used without a UPS in the rack, the PDU needs one branch circuit with a NEMA 5-20 receptacle. If neither a UPS nor a PDU are used in the 120 VAC case, plug the components directly into NEMA 5-15 receptacles using the line cords supplied. 29